:root {
  --noir: #0A0B0F;
  --graphite: #15171E;
  --trait: #2A2D38;
  --brume: #8B8F9C;
  --craie: #EDEEF2;
  --signal: #C8FF4D;
  --radius: 20px;
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--noir);
  color: var(--craie);
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.mono {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brume);
}
.logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  letter-spacing: -0.04em;
  text-decoration: none;
}
.dot {
  display: inline-block;
  width: 0.2em; height: 0.2em;
  border-radius: 50%;
  background: var(--signal);
  margin-left: 0.05em;
}
h1, h2, h3 {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1;
  margin: 0;
}

/* Navigation */
header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(10, 11, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--trait);
}
nav {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 72px; gap: 16px; flex-wrap: wrap;
}
nav .logo { font-size: 26px; }
.nav-links { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; }
.nav-links a { text-decoration: none; color: var(--brume); font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--craie); }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 24px;
  border-radius: 999px;
  font-weight: 600; font-size: 15px;
  text-decoration: none;
  border: 1px solid var(--trait);
  color: var(--craie);
  transition: border-color .2s, background .2s;
}
.nav-links a.btn { color: var(--craie); }
.btn:hover { border-color: var(--brume); }
.btn-primary { background: var(--craie); color: var(--noir); border-color: var(--craie); }
.btn-primary:hover { background: #fff; }

/* Hero */
.hero { padding: 120px 0 96px; position: relative; overflow: hidden; }
.hero-grid {
  position: absolute; right: -40px; top: 60px;
  display: grid; grid-template-columns: repeat(14, 10px); gap: 26px;
  opacity: .9; pointer-events: none;
}
.hero-grid span { width: 8px; height: 8px; border-radius: 50%; background: #1E2029; }
.hero-grid span.on { background: var(--signal); }
.hero-content { position: relative; max-width: 820px; }
.hero h1 { font-size: clamp(48px, 9vw, 112px); margin: 24px 0 32px; }
.hero p.lead { font-size: clamp(18px, 2.2vw, 22px); color: var(--brume); max-width: 620px; margin: 0 0 40px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Sections */
section { padding: 96px 0; border-top: 1px solid var(--trait); }
.section-head { display: flex; flex-direction: column; gap: 18px; margin-bottom: 56px; max-width: 720px; }
.section-head h2 { font-size: clamp(36px, 5vw, 60px); }
.section-head p { margin: 0; color: var(--brume); font-size: 18px; }

/* Services */
.services { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.card {
  background: var(--graphite);
  border: 1px solid var(--trait);
  border-radius: var(--radius);
  padding: 32px;
  display: flex; flex-direction: column; gap: 16px;
}
.card h3 { font-size: 30px; }
.card p { margin: 0; color: var(--brume); }
.card ul { margin: 8px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.card li { padding-left: 22px; position: relative; font-size: 15px; }
.card li::before {
  content: ""; position: absolute; left: 0; top: 0.62em;
  width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid var(--brume);
}
.card .num { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--brume); }

/* Concept */
.concept { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr)); gap: 56px; align-items: center; }
.definition {
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.35;
  margin: 0;
}
.definition .mono-inline { font-family: 'JetBrains Mono', monospace; color: var(--signal); font-size: 0.7em; }
.concept-text p { color: var(--brume); margin: 0 0 18px; }

/* Méthode */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.step { border-top: 1px solid var(--trait); padding-top: 24px; }
.step .num { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--brume); }
.step h3 { font-size: 24px; margin: 14px 0 10px; }
.step p { margin: 0; color: var(--brume); font-size: 16px; }

/* Projets */
.projects { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: 20px; }
.project-visual {
  aspect-ratio: 16 / 10;
  border-radius: 14px;
  background: var(--noir);
  border: 1px solid var(--trait);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.project-visual img { width: 100%; height: 100%; object-fit: cover; }
.project-visual img.contain { width: 38%; height: auto; object-fit: contain; border-radius: 18px; }
.project-visual .visual-text { font-family: 'JetBrains Mono', monospace; font-size: 15px; color: var(--signal); }
.tag {
  align-self: flex-start;
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  border: 1px solid var(--trait); border-radius: 999px; padding: 4px 12px; color: var(--brume);
}
.card .more { margin-top: auto; font-weight: 600; font-size: 15px; text-decoration: none; }
.card .more:hover { color: var(--signal); }

/* Contact */
.contact {
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 28px;
}
.contact h2 { font-size: clamp(44px, 8vw, 96px); }
.contact p { color: var(--brume); max-width: 560px; margin: 0; font-size: 18px; }

footer { border-top: 1px solid var(--trait); padding: 32px 0; }
.footer-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; color: var(--brume); font-size: 14px; }
.footer-row .logo { font-size: 20px; color: var(--craie); }
.footer-row a { color: var(--brume); text-decoration: none; }
.footer-row a:hover { color: var(--craie); }
.footer-links { display: flex; gap: 20px; }

/* Mentions légales */
.legal { padding: 88px 0 96px; border-top: 0; }
.legal .wrap { max-width: 780px; }
.legal h1 { font-size: clamp(40px, 7vw, 72px); margin: 20px 0 48px; }
.legal h2 { font-size: 26px; margin: 48px 0 14px; letter-spacing: -0.02em; }
.legal p, .legal li { color: var(--brume); }
.legal strong { color: var(--craie); font-weight: 600; }
.legal ul { padding-left: 20px; }
.legal .back { display: inline-block; margin-bottom: 8px; text-decoration: none; color: var(--brume); }
.legal .back:hover { color: var(--craie); }

@media (max-width: 720px) {
  .hero { padding: 72px 0 64px; }
  .hero-grid { opacity: .4; right: -160px; }
  section { padding: 72px 0; }
  .nav-links a:not(.btn) { display: none; }
  .card { padding: 24px; }
}